The Influence of Electronic Devices on Sleep
The constant illumination from electronic gadgets can hinder a restful night’s sleep. While lamps are being turned off in the bedrooms of teenagers across the United States, the screens of computers, smartphones, and tablets frequently remain illuminated throughout the night. These devices emit light across the spectrum, but it is the blue light in particular that can disrupt sleep.
Understanding Blue Light
Blue light is produced by most electronic devices, such as televisions and newer energy-efficient light bulbs. Exposure to blue light tends to increase with age.
Impact on Sleep Patterns
Blue light is particularly harmful as it is the highest energy wavelength of visible light, adversely affecting eye health. Recent studies indicate a significant negative effect on our sleep patterns caused by excessive exposure to blue light.
Circadian Rhythms and Alertness
Research has revealed that blue light can disrupt our natural circadian rhythm, which is also known as our biological clock. It not only stimulates the body but also increases alertness. Consequently, using electronic devices close to bedtime can considerably delay the onset of deep REM sleep. One contributing factor may be the strong suppressive effect of blue light on melatonin levels, which play a crucial role in regulating proper circadian rhythms. Melatonin supplements are commonly utilized for treating sleep disorders, and adequate sleep is essential for adults.
Importance of Sleep for Children and Teens
Pediatricians emphasize the critical role of sleep for children and teenagers, as it is vital for their neurological development. Adequate sleep also helps prevent various learning and behavioral issues. The energy emitted by blue light is potent enough to reach the deepest layers of the eye, including the retina, which may elevate the long-term risk of macular degeneration.
Protecting Against Blue Light
It is essential to safeguard our eyes from the potential harmful effects associated with blue light exposure, especially in children and teens. This can be achieved by reducing the time spent on digital devices, particularly before sleep. Recently, laboratories have developed blue light-blocking lens coatings for glasses that can filter out up to 20% of harmful blue light. These coatings also provide complete UV protection while allowing clear vision and color distinction. We recommend discussing these coatings with your eye care professional or contacting our office to arrange an eye examination.
For more info go to: Stokolvision.com
By Dr. Arnold M. Stokol and Dr. Andreane Fagala | Special Contributors
Dr. Arnold Stokol is a Diplomate of the American Board of Optometry, a member of the Texas Optometric Association and the American Optometric Association. He is a former president of the North Texas Optometry Society.
Dr. Andreane Fagala is a therapeutic optometrist with a special focus on pediatric optometry, diabetes management, and specialty scleral contact lenses.
